Current status of the transients pipeline, and its data interface

Evert Rol
LOFAR Transients Key Project Meeting, Meudon, December 2011

Transcript

1. THE LOFAR TRANSIENTS PIPELINE STATUS UPDATE Evert Rol University of Amsterdam Wednesday, 14 December, 2011
2. STATUS • Pipeline works! • It will find transients, attempt to classify them and notify people • New additions: • monitoring list • email alerts • Needs good test data sets Wednesday, 14 December, 2011
3. TRAnsients Pipeline Database Source detection Classification Raw data Transients TRansients Imaging Pipeline MAC/SAS World Wednesday, 14 December, 2011
4. TRANSIENTS IMAGING PIPELINE • Standard imaging procedure • Optimised for transients • Avoid flagging fast transients • re-arrange subbands • prepare final images for TRAP (header data) • Time slicing Wednesday, 14 December, 2011
5. TRANSIENTS PIPELINE Images False discovery rate Source detection Database storage Light curves Catalogs Source matching Transients Variable detection Classification “Manual” Automated Classification World Classified transient Monitoring list Monitoring list Wednesday, 14 December, 2011
6. CLASSIFICATION • Manual decision tree • Good to pick out those sources you care for • Based on simple statistics, catalog matches, duration • Automated classification • Development ongoing • Lack of training data set Wednesday, 14 December, 2011
7. MONITORING • Purpose: make sure the flux at a particular position is measured, even when there is no source detection (anymore). • Sources in the list: • Automatically monitor newly detected transients • Put your (X-ray, optical) transient in the list Wednesday, 14 December, 2011
8. ALERTS • Get notified by email • Just the most important information: transient, position, time • Set criteria which notifications you want (dependent on classification) Wednesday, 14 December, 2011
9. TRAP STATUS • A simple run, from source extraction to classification: twenty seconds • Finds transients, but reliability depends on images • In principle, light curves are available! • Email alerts will point you to the light curve Wednesday, 14 December, 2011
10. TRAP STATUS • Quality control • Spectral information • Automated classification • Polarisation information • MAC/SAS integration FUTURE WORK Wednesday, 14 December, 2011
11. RESULTS ( THOSE LIGHT CURVES ) HTTP://HEASTRO1.SCIENCE.UVA.NL:8888/ Wednesday, 14 December, 2011
12. Wednesday, 14 December, 2011
13. Wednesday, 14 December, 2011
14. Wednesday, 14 December, 2011
15. Wednesday, 14 December, 2011
16. Wednesday, 14 December, 2011
17. Wednesday, 14 December, 2011
18. Wednesday, 14 December, 2011
19. Wednesday, 14 December, 2011
20. Wednesday, 14 December, 2011
21. TRANSIENT PIPELINE - SUMMARY • Basic implementation ready • Extensions up next: quality check; spectral information • Ready to automatically find the first new transients (MSSS) Wednesday, 14 December, 2011